In the room with the BombCopy Essence, defeat the Dekabu to reveal a round-trip door. After entering the round-trip door, use Plasma to get Zap Bomb and Bomb Bowl a Zap Bomb under the wire. The explosion will create a lightning bolt that will power the wire to open the gate in the ceiling.

In the room with the Electro Saws, use Zap Bomb to power a wire to open a gate in the ceiling.